** GE P7 self cleaning oven. I need the proper procedure for doing the cleaning **
Have you checked the user manual?
If you no longer have it, you may be able to download a replacement if you get the model number off the appliance's model and serial number tag. "P7" isn't it.
You can find tips for locating the model number tag on your appliances in the 'Repair Parts' section of my web site linked below and owner's manual resources in the 'Home Service' section.